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99 lines
3.4 KiB
99 lines
3.4 KiB
#include "message.h"
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#include <QSqlQuery>
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#include <QNetworkRequest>
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#include <QString>
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#include <QDebug>
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#include <QDateTime>
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#include "widget.h"
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#include <QMessageBox>
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message::message()
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{
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}
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void message::mySlot(QString str)
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{
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// 使用在 main 中创建的数据库连接
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QSqlDatabase db = QSqlDatabase::database("text01");
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if (!db.isOpen()) {
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QMessageBox::warning(this, tr("警告！"), tr("数据库未打开！"), QMessageBox::Yes);
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return;
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}
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// 查询空车位数量
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QString temp_car = QString("select * from cnt where number='%1' ").arg("number_of_c");
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QSqlQuery temp_query(db); // 使用 db 对象来执行查询
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temp_query.exec(temp_car);
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temp_query.next();
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int temp_cnt = temp_query.value(1).toInt();
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if (temp_cnt == 0) {
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QMessageBox::warning(this, tr("警告！"), tr("停车场已无车位"), QMessageBox::Yes);
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} else {
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// 进入操作
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QString number = QString("select * from message where number='%1' ").arg(str);
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QSqlQuery query(db), query_1(db), query_2(db);
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int times;
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// 存储进入次数
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if (query.exec(number) && query.next()) {
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// 修改已有信息
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times = query.value(1).toInt();
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times++;
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QString temp = QString("update message set times = '%1' where number = '%2'").arg(times).arg(str);
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query.exec(temp);
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} else {
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// 第一次进入
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QString s = QString("insert into message(number, times, total_time, pay) values('%1', '%2', '%3', '%4')")
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.arg(str).arg(1).arg(0).arg(0);
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query_2.exec(s);
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}
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// 更改车场信息
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temp_cnt--;
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QString temp_change = QString("update cnt set cnt = '%1' where number = '%2'").arg(temp_cnt).arg("number_of_c");
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temp_query.exec(temp_change);
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// 获取当前时间
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QDateTime dateTime(QDateTime::currentDateTime());
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QString time = dateTime.toString("yyyy-MM-dd hh:mm:ss");
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// 存储车牌和进入时间
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QString ch = QString("insert into car_number(number, time) values('%1', '%2')").arg(str).arg(time);
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query_1.exec(ch);
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}
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}
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void message::Slot_out(QString str)
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{
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// 使用在 main 中创建的数据库连接
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QSqlDatabase db = QSqlDatabase::database("text01");
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if (!db.isOpen()) {
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QMessageBox::warning(this, tr("警告！"), tr("数据库未打开！"), QMessageBox::Yes);
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return;
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}
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QString Str = QString("select * from car_number where number='%1' ").arg(str);
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QSqlQuery query(db);
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query.exec(Str);
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query.next();
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QString time = query.value(1).toString();
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QDateTime time_1 = QDateTime::fromString(time, "yyyy-MM-dd hh:mm:ss");
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QDateTime time_2 = QDateTime::currentDateTime();
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int second = time_1.secsTo(time_2); // 计算时间差
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// 删除数据库中车牌号
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QString a = QString("delete from car_number where number = '%1'").arg(str);
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query.exec(a);
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// 更改车场信息
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QString temp_car = QString("select * from cnt where number='%1' ").arg("number_of_c");
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QSqlQuery temp_query(db);
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temp_query.exec(temp_car);
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temp_query.next();
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int temp_cnt = temp_query.value(1).toInt();
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temp_cnt++;
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QString temp_change = QString("update cnt set cnt = '%1' where number = '%2'").arg(temp_cnt).arg("number_of_c");
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temp_query.exec(temp_change);
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}
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